Syringe eduction-tube



(No Model.)

T. J. MAYALL.

- SYRINGVE EDUOTION TUBE Patented Oct. 2, 1883 UNITED, STATES PATENT OFFICE.

THOMAS J. MAYALL, OF READING, ASSIGNOR TO THE'BRUNSlVICK ANTI- MONY COMPANY, OF BOSTON, MASSACHUSETTS.

SYRINGE EDUCTlO N-TUBE.

SPECIFICATION forming part of Letters Patent No, 286,011, dated October 2, 188?.

Application filed March 19,1853. (No model, i i

.To all whom'it may concern.-

Be it known that I, THOMAS J. hIAYALL, of Reading, in the county of Middlesex and Commonwealth of Massachusetts, have invented a new and useful Improvement in the Points or Eduction-Tubes for Vaginal and other Syringes, of which the following is a specification.

My invention relates to the material of which the syringe-point or eduction-tube is made and the manner of making it, the object being to produce a syringe-point or eduction-tube which shall be free from any-metallic connection, and which will be so flexible that it may be entered int-o any passage, however crooked or obstructed, if not wholly closed, without injury or pain to the patient; and it consists in making the syringe-point or e'duetion-tube wholly of the rubber compound hereinbelow described, or other suitable compound of rubber or other gum or material which can be cured or vulcanized, and without metallic parts or screw-joints to connect it with the body of the syringe.

- I Herctofore the points or eduetion-tubes of vaginal and other syringes have usually been made of metal or of hard rubber, with a screw or other joint to connect them witlrthe body of the syringe. The objectionable features of a .metallic point for a syringe are obvious and need not be detailed here.

To make my improved syringe-pointI take as preferable a compound of pure rubber and penta-sulphide or golden sulphuret of antimony, thoroughly combined and mixed by the usual process of grinding rubber compounds, and shape it in a mold, the inside form and dimensions of which are exactly what is required for the outside form and dimensions of the syringe-point when finished. \Vithin such a mold I place in its center on its axial line a spindle of the form and dimensions required for the passage through the syringe point. On the rear of this spindle is made the form of a screw, which is identical in form and dimensions with the screw on the front-end of the body of the syringe, to which the point is to be applied. The mold and central spindle are secured in their relative. positions and closed in any suitable way, and the space hethe central spindle, so as to stand at an angle- 4 less than a right angle to the axial line of the spindle and-reaching to the inner surface of the shell of the mold. As it may be desirable to make the extreme forward end of the syringe-point and the rear end of it, where the screw is, a little harder, when cured, than the tube betwecnthese points, I add at these ends, wh'en'the rubber compound is placedin the mold, a quantity of free sulphur in a pulverized condition suflicient to give them the required condition of hardness when cured, which is a little harder than the-tube, which must be flexible and elastic and so soft that it will not cause pain in the parts it is in contact with. A Vhen the mold for the syringe-point .is filled with the compound of rubber and pentasulphide of antimony, it is placed in a vuleanizingoven and cured for about an average period of four hours at a temperature of about 250 Fahrenheit, or for such time and to that degree which will leave the tube of the syringe-point soft and flexible and elastic, and the ends a little harder, so that the screw will engage and hold the screw on the main body of the syringe to which it willbe aflixed, and

the forward end of the point will retain. its shape against a moderate pressure. "When this syringe-point is cured, it is ready for use, and can be aflixed to any syringe-body h vi-ng a screw to. correspond wit-h the screw on it.

A syringe-point made in this way will enter the vaginal or other passages in the body to which its size is adapted without causing pain or injury to the parts, and is especially useful in cases where the passage has become crooked or inflamed in consequence of tumors or temporary swellings; and it maybe made of all sizes, so as to be adapted to the ear and nose. In the drawing annexed, Figure 1 shows a side view of a syringe-point or eduetion-tube with a bulbous end. Fig. 2 shows a iongitudr nai section of the same 011 the line of its axis. Fig. 3 shows a forward end \iOW of the syringe part with the edu('tion-opeuings in it;

Fig. 4 is a side View of a syringe-point without the bulbous forward end. Fig. 5 shows side views of svring'e-point's with the, bulbous forward ends as bent by entering a crooked passage. it

A indicates the eduetion-o 1ening;s in the forward ends of the svringe-point.

A indicates the passage in the syringepoint through which the fluids in thesyringe are conducted to the desired parts.

A. is the screw in the rear end ot'the syringepoint by whieh it is atiixed to the body ot' the syringe.

I claim as new and ot'1ny-i11vention 1. lhe above-deseribed improved syringepoint or ((ilHfiiOlbitliiO, made of rubber and puma-sulphide ot' antimony compound cured by heat, substantially as set; forth.

2. A syril1ge-pointz made of rubber and antin1ony emnponnd cured by heat and having; a screw formed in its rear end, by which it may be uttixed to the body of the syringe, the ends of said syringe-point beingmade harder than the main body thereof, substantially as set forth THOS. J. MAYALL.

Witnesses:

(11s. liouon'rox, J'. 1*. PICKICRING. 

